CN114259081B - Method for regulating and controlling pH of flue gas by utilizing volatile acid adsorbed by porous material - Google Patents
Method for regulating and controlling pH of flue gas by utilizing volatile acid adsorbed by porous material Download PDFInfo
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- CN114259081B CN114259081B CN202111462266.4A CN202111462266A CN114259081B CN 114259081 B CN114259081 B CN 114259081B CN 202111462266 A CN202111462266 A CN 202111462266A CN 114259081 B CN114259081 B CN 114259081B
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- 239000002253 acid Substances 0.000 title claims abstract description 153
- 239000011148 porous material Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 63
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 57
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000003546 flue gas Substances 0.000 title claims abstract description 46
- 230000001276 controlling effect Effects 0.000 title claims abstract description 41
- 239000000779 smoke Substances 0.000 claims abstract description 101
- 238000012546 transfer Methods 0.000 claims abstract description 14
- 235000019504 cigarettes Nutrition 0.000 claims description 85
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- 238000001179 sorption measurement Methods 0.000 claims description 31
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- 235000010233 benzoic acid Nutrition 0.000 claims description 29
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 claims description 28
- 230000000391 smoking effect Effects 0.000 claims description 27
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 26
- XYHKNCXZYYTLRG-UHFFFAOYSA-N 1h-imidazole-2-carbaldehyde Chemical compound O=CC1=NC=CN1 XYHKNCXZYYTLRG-UHFFFAOYSA-N 0.000 claims description 25
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- 230000001953 sensory effect Effects 0.000 claims description 11
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 11
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- 238000002290 gas chromatography-mass spectrometry Methods 0.000 claims description 4
- WLJVXDMOQOGPHL-PPJXEINESA-N 2-phenylacetic acid Chemical compound O[14C](=O)CC1=CC=CC=C1 WLJVXDMOQOGPHL-PPJXEINESA-N 0.000 claims description 3
- IGIDLTISMCAULB-UHFFFAOYSA-N 3-methylvaleric acid Chemical compound CCC(C)CC(O)=O IGIDLTISMCAULB-UHFFFAOYSA-N 0.000 claims description 3
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- 150000007513 acids Chemical class 0.000 abstract description 37
- 241000208125 Nicotiana Species 0.000 abstract description 20
- 235000002637 Nicotiana tabacum Nutrition 0.000 abstract description 20
- 230000007794 irritation Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 10
- 239000012621 metal-organic framework Substances 0.000 description 12
- 150000007524 organic acids Chemical class 0.000 description 11
- 235000005985 organic acids Nutrition 0.000 description 8
- SMNDYUVBFMFKNZ-UHFFFAOYSA-N 2-furoic acid Chemical compound OC(=O)C1=CC=CO1 SMNDYUVBFMFKNZ-UHFFFAOYSA-N 0.000 description 6
- 235000013162 Cocos nucifera Nutrition 0.000 description 6
- 244000060011 Cocos nucifera Species 0.000 description 6
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- 238000010926 purge Methods 0.000 description 5
- 239000002028 Biomass Substances 0.000 description 4
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- 238000013270 controlled release Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 3
- 229960002715 nicotine Drugs 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 2
- JOOXCMJARBKPKM-UHFFFAOYSA-N 4-oxopentanoic acid Chemical compound CC(=O)CCC(O)=O JOOXCMJARBKPKM-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 2
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000001630 malic acid Substances 0.000 description 2
- 235000011090 malic acid Nutrition 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- WLJVXDMOQOGPHL-UHFFFAOYSA-N phenylacetic acid Chemical compound OC(=O)CC1=CC=CC=C1 WLJVXDMOQOGPHL-UHFFFAOYSA-N 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 235000019615 sensations Nutrition 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 239000004475 Arginine Substances 0.000 description 1
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- ODKSFYDXXFIFQN-BYPYZUCNSA-P L-argininium(2+) Chemical compound NC(=[NH2+])NCCC[C@H]([NH3+])C(O)=O ODKSFYDXXFIFQN-BYPYZUCNSA-P 0.000 description 1
- AGPKZVBTJJNPAG-WHFBIAKZSA-N L-isoleucine Chemical compound CC[C@H](C)[C@H](N)C(O)=O AGPKZVBTJJNPAG-WHFBIAKZSA-N 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229930013930 alkaloid Natural products 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- ODKSFYDXXFIFQN-UHFFFAOYSA-N arginine Natural products OC(=O)C(N)CCCNC(N)=N ODKSFYDXXFIFQN-UHFFFAOYSA-N 0.000 description 1
- 159000000032 aromatic acids Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000002509 fulvic acid Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 229960000310 isoleucine Drugs 0.000 description 1
- AGPKZVBTJJNPAG-UHFFFAOYSA-N isoleucine Natural products CCC(C)C(N)C(O)=O AGPKZVBTJJNPAG-UHFFFAOYSA-N 0.000 description 1
- 229940040102 levulinic acid Drugs 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003928 nasal cavity Anatomy 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000003279 phenylacetic acid Substances 0.000 description 1
- 229960003424 phenylacetic acid Drugs 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 150000007519 polyprotic acids Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention provides a method for regulating and controlling the pH of smoke by utilizing volatile acid adsorbed by a porous material, which realizes quantitative transfer of volatile acid components into the smoke by utilizing the control release function of the porous material on volatile components on the basis of defining a relation model of the pH of the smoke and the volatile acid in particulate matters, thereby achieving the aim of regulating and controlling the pH value of the smoke and realizing the directional and accurate regulation and control of the pH value of the smoke; the method avoids the risk of changing the formula of the flavoring by adding components such as acids and the like into the tobacco shreds, and realizes the purpose of regulating and controlling the pH of the smoke by controlling the direct transfer of the adsorbed volatile acid to the smoke by using the porous material; the method for regulating and controlling the pH of the flue gas provided by the invention has various application modes, obvious effect and strong regulating and controlling capability, and can effectively reduce the irritation of the flue gas and improve the sucking quality of the flue gas.
Description
Technical Field
The invention relates to the technical field of cigarette product design, in particular to a method for regulating and controlling the pH of smoke by utilizing volatile acid adsorbed by a porous material.
Background
The pH of cigarette smoke is one of comprehensive indexes reflecting the overall quality of the cigarette, is a comprehensive expression form of chemical composition and chemical balance in main stream particulate matters of the cigarette, and is directly related to sensory quality indexes such as strength, irritation and the like during smoking of the cigarette. The noise (oral cavity stimulus, oral cavity residue, convergence, throat stimulus, nasal cavity stimulus and the like) of the cigarette smoke can be weakened by regulating the pH of the smoke, the sensory comfort of the cigarette is improved, and the method has important significance for further improving the internal quality of the cigarette.
Research shows that volatile/semi-volatile organic acid widely exists in tobacco, is one of important chemical compositions in tobacco, and generally accounts for 12% -16% of dry weight of tobacco, and has important influence on quality of tobacco and cigarettes. For example, more non-volatile acids (including fatty acids, alicyclic acids, aromatic acids, fulvic acids, dibasic acids, polybasic acids, etc. with larger molecular weight) are studied domestically to account for about 10% of the dry weight of tobacco leaves, and can be combined with alkaloids to form salts to regulate the ratio of protonated and free nicotine, thereby greatly affecting the strength and taste of the smoke; some of the common components of tobacco essence and spice, such as malic acid, citric acid, oxalic acid and the like, have no obvious direct effect on the aroma of the smoke, but some of the common components can adjust the value of the tobacco, improve the taste, become mellow and increase the concentration of the smoke, thus indirectly influencing the aroma of the smoke, playing a role in balancing in the smoke and improving the sensory quality of cigarettes.
The content of nicotine and acid components in the smoke has an important influence on pH, and how to regulate and control the pH of the cigarette smoke through the formula adjustment of the cigarette or the design of the material fragrance in the processing process is widely paid attention to scientific researchers in the tobacco industry. Lai Yanhua, etc., have found that butyric acid, isovaleric acid, levulinic acid, malic acid, glucose and arginine in tobacco shreds can lower the pH value of cigarette smoke, and that nicotine and isoleucine can increase the pH value of cigarette smoke (Chinese tobacco theory report, 2018,24 (05): 7-13); chu Wenjuan and the like can realize the change of the pH value of main stream smoke of a fine cigarette sample (tobacco science and technology, 2019,52 (02): 47-55.) by utilizing the mutual collocation of tow specification, filter rod pressure drop and filter tip ventilation; guangxi Chinese tobacco Yang Longyan and the like propose a method for regulating and controlling the pH of cigarette smoke by adding non-volatile acid to tobacco shreds (CN 109820242A).
The method influences the pH value of cigarette smoke by adjusting acid and alkali in the tobacco shred raw materials or changing filter tip parameters. However, after acids are added into tobacco shreds, the composition of the material-flavor formula is changed, the cigarette combustion pyrolysis process is participated, more variables which are difficult to control are more, and the deviation of the regulation result is larger; in addition, the filter parameters have larger influence on the suction condition after adjustment, and the fluctuation of sensory quality is larger.
Disclosure of Invention
Therefore, the invention aims to provide a method for regulating and controlling the pH value of the flue gas by utilizing volatile acid adsorbed by a porous material, and the aim of regulating and controlling the pH value of the flue gas is fulfilled by utilizing the controlled release effect of the porous material on volatile components to realize quantitative transfer of the volatile acid components into the flue gas; the method avoids the risk of changing the formula of the flavoring by adding components such as acids and the like into the tobacco shreds, and realizes the purpose of regulating and controlling the pH of the smoke by controlling the direct transfer of the adsorbed volatile acid to the smoke by using the porous material; the method for regulating and controlling the pH of the flue gas provided by the invention has various application modes and strong regulation and control capability, and can effectively reduce the irritation of the flue gas and improve the sucking quality of the flue gas.
The invention provides a method for regulating and controlling the pH of smoke by utilizing volatile acid adsorbed by a porous material, which comprises the following steps:
a) The cigarette sample requiring to regulate and control the pH of the smoke is smoked by a smoking machine, the particulate matters of the smoke are trapped, and the pH value of the smoke and the content of volatile acid in the particulate matters are measured; adopting a mathematical statistical method to analyze and determine a relation model of the pH value of the cigarette sample and each volatile acid;
b) The porous material is utilized to adsorb volatile acid, and the release amount and the release rate of the volatile acid adsorbed by the porous material under the condition of specific gas flow rate are analyzed;
c) Determining the regulating direction and amplitude of the pH value of the cigarette sample, and determining the types and contents of the porous material for regulating the pH value and the adsorbed volatile acid on the basis of not changing the sensory style characteristics of the cigarette product according to the relation model of the pH value of the cigarette sample and each volatile acid determined in the step a) and the release characteristics of the porous material adsorbed volatile acid obtained in the step b);
d) Preparing the volatile acid sample adsorbed by the porous material determined in the step c), applying the volatile acid sample to the filter tip, and realizing the regulation and control of the pH value of the smoke by utilizing the transfer of the volatile acid to the smoke during suction.
Preferably, in the step a), the smoking machine is used for smoking 20-60 cigarette samples by adopting a rotary disc type smoking machine or a linear smoking machine.
Preferably, the trapped particulate matter of step a) is extracted with an extract from the Cambridge filter element.
Preferably, the instrument for measuring the pH value of the flue gas in the step a) is a precise pH meter, and the method for measuring the content of volatile acid in the particulate matters is a gas mass spectrometry method.
Preferably, the volatile acids determined in step a) comprise three or more of formic acid, acetic acid, propionic acid, furanic acid, benzoic acid, phenylacetic acid, valeric acid, isovaleric acid, alpha-methylbutyric acid, beta-methylpentanoic acid, glycolic acid, methylpentanoic acid and lactic acid.
Preferably, the mathematical statistics method in step a) comprises one or more of correlation analysis, gray correlation analysis, genetic algorithm analysis and neural network analysis.
Preferably, the porous material in step b) is a porous carbon material, activated carbon particles, mesoporous molecular sieve, metal organic framework material, macroporous resin or plant tissue particles.
Preferably, the specific gas flow rate conditions in step b) are 17.5mL/s.
Preferably, the method for preparing the volatile acid sample adsorbed by the porous material determined in step c) in step d) is a static adsorption method.
Preferably, the means of application in step d) is a segmented composite.
The invention provides a method for regulating and controlling the pH of smoke by utilizing volatile acid adsorbed by a porous material, which comprises the following steps: a) The cigarette sample requiring to regulate and control the pH of the smoke is smoked by a smoking machine, the particulate matters of the smoke are trapped, and the pH value of the smoke and the content of volatile acid in the particulate matters are measured; adopting a mathematical statistical method to analyze and determine a relation model of the pH value of the cigarette sample and each volatile acid; b) The porous material is utilized to adsorb volatile acid, and the release amount and the release rate of the volatile acid adsorbed by the porous material under the condition of specific gas flow rate are analyzed; c) Determining the regulating direction and amplitude of the pH value of the cigarette sample, and determining the types and contents of the porous material for regulating the pH value and the adsorbed volatile acid on the basis of not changing the sensory style characteristics of the cigarette product according to the relation model of the pH value of the cigarette sample and each volatile acid determined in the step a) and the release characteristics of the porous material adsorbed volatile acid obtained in the step b); d) Preparing the volatile acid sample adsorbed by the porous material determined in the step c), applying the volatile acid sample to the filter tip, and realizing the regulation and control of the pH value of the smoke by utilizing the transfer of the volatile acid to the smoke during suction. Compared with the prior art, the method realizes quantitative transfer of volatile acid components into the smoke by utilizing the controlled release effect of the porous material on the volatile components on the basis of defining the relation model of the smoke pH and volatile acid in the particulate matters, thereby achieving the purpose of regulating the smoke pH value and realizing the directional and accurate regulation of the smoke pH; the method avoids the risk of changing the formula of the flavoring by adding components such as acids and the like into the tobacco shreds, and realizes the purpose of regulating and controlling the pH of the smoke by controlling the direct transfer of the adsorbed volatile acid to the smoke by using the porous material; the method for regulating and controlling the pH of the flue gas provided by the invention has various application modes, obvious effect and strong regulating and controlling capability, and can effectively reduce the irritation of the flue gas and improve the sucking quality of the flue gas.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a method for regulating and controlling the pH of smoke by utilizing volatile acid adsorbed by a porous material, which comprises the following steps:
a) The cigarette sample requiring to regulate and control the pH of the smoke is smoked by a smoking machine, the particulate matters of the smoke are trapped, and the pH value of the smoke and the content of volatile acid in the particulate matters are measured; adopting a mathematical statistical method to analyze and determine a relation model of the pH value of the cigarette sample and each volatile acid;
b) The porous material is utilized to adsorb volatile acid, and the release amount and the release rate of the volatile acid adsorbed by the porous material under the condition of specific gas flow rate are analyzed;
c) Determining the regulating direction and amplitude of the pH value of the cigarette sample, and determining the types and contents of the porous material for regulating the pH value and the adsorbed volatile acid on the basis of not changing the sensory style characteristics of the cigarette product according to the relation model of the pH value of the cigarette sample and each volatile acid determined in the step a) and the release characteristics of the porous material adsorbed volatile acid obtained in the step b);
d) Preparing the volatile acid sample adsorbed by the porous material determined in the step c), applying the volatile acid sample to the filter tip, and realizing the regulation and control of the pH value of the smoke by utilizing the transfer of the volatile acid to the smoke during suction.
Firstly, smoking a cigarette sample with the pH value of smoke to be regulated by a smoking machine, capturing a smoke particulate matter, and measuring the pH value of the smoke and the content of volatile acid in the particulate matter; and analyzing and determining a relation model of the pH value of the cigarette sample and each volatile acid by adopting a mathematical statistical method.
In the invention, the smoking machine is preferably a rotary disc type smoking machine or a linear type smoking machine for smoking 20-60 cigarette samples, and more preferably a rotary disc type smoking machine for smoking 40 cigarette samples.
In the present invention, the trapped particulate matter is preferably extracted with an extract from Cambridge filter components.
In the invention, the instrument for measuring the pH value of the flue gas is preferably a precise pH meter, and the method for measuring the content of volatile acid in the particulate matters is preferably a gas chromatography-mass spectrometry method and is realized by using an analysis instrument well known to a person skilled in the art.
In the present invention, the measured volatile acid preferably includes three or more of formic acid, acetic acid, propionic acid, furanic acid, benzoic acid, phenylacetic acid, valeric acid, isovaleric acid, α -methylbutyric acid, β -methylpentanoic acid, glycolic acid, methylpentanoic acid, and lactic acid.
In the present invention, the mathematical statistical method for specifying the relation model of the flue gas pH and the volatile acid in the particulate matter preferably includes one or more of correlation analysis, gray correlation analysis, genetic algorithm analysis, and neural network analysis. In the preferred embodiment of the invention, gray correlation analysis is adopted to determine the pH value of the flue gas and the volatile acid type with larger correlation degree in each volatile acid, and a relation model of the pH value and the volatile acid type with larger correlation degree is established based on multiple regression analysis.
Then, the invention utilizes the porous material to absorb the volatile acid, and analyzes the release amount and release rate of the porous material absorbing the volatile acid under the condition of specific gas flow rate, namely the release characteristic of the porous material absorbing the volatile acid.
In the present invention, the porous material is preferably a porous carbon material, activated carbon particles, mesoporous molecular sieve, metal organic framework material, macroporous resin or plant tissue particles. The source of the porous material is not particularly limited in the present invention, and commercially available products known to those skilled in the art may be used; wherein the macroporous resin porous material can be equal nonpolar or weak polar macroporous adsorption resin, weak base anion exchange resin and the like, the main structure is high polymer such as polystyrene copolymer and the like, and the particle size is preferably 1-3 mm. In the present invention, the porous material preferably has an inner surface area of 400 to 1000m 2 The average pore diameter is preferably 2 to 50nm.
In a preferred embodiment of the present invention, the porous materials are loaded with volatile acids by a static adsorption method, and the types of the volatile acids are the types of the volatile acids with high association degree screened in the step a).
In the present invention, the specific gas flow rate condition is preferably 17.5mL/s.
Then, the invention defines the regulating direction and amplitude of the pH value of the cigarette sample, and determines the type and content of the porous material for regulating the pH value and the adsorbed volatile acid on the basis of not changing the sensory style characteristics of the cigarette product according to the relation model of the pH value of the cigarette sample and each volatile acid determined in the step a) and the release characteristics of the adsorbed volatile acid of the porous material obtained in the step b).
The invention determines the types and the contents of porous materials and adsorbed volatile acids on the basis of the principle of not changing the sensory style characteristics of the cigarette products.
And finally, preparing the volatile acid sample adsorbed by the porous material determined in the step c), applying the volatile acid sample to the filter tip, and realizing the regulation and control of the pH value of the smoke by utilizing the transfer of the volatile acid to the smoke during suction.
In the present invention, the method for preparing the volatile acid sample adsorbed by the porous material determined in step c) is preferably a static adsorption method.
In the present invention, the application means is preferably a segmented composite type.
The invention provides a method for regulating and controlling the pH of smoke by utilizing volatile acid adsorbed by a porous material, which has the beneficial effects that:
(1) The pH value of the smoke is regulated and controlled by utilizing the sustained and controlled release effect of the porous material on volatile acids, so that the risk of changing the flavoring formula caused by adding acids and other components into the tobacco shreds is avoided, and the applicability in cigarette products is strong;
(2) The method for regulating and controlling the pH of the flue gas provided by the invention has various application modes and strong regulation and control capability, and can effectively reduce the irritation of the flue gas and improve the sucking quality of the flue gas.
The invention provides a method for regulating and controlling the pH of smoke by utilizing volatile acid adsorbed by a porous material, which comprises the following steps: a) The cigarette sample requiring to regulate and control the pH of the smoke is smoked by a smoking machine, the particulate matters of the smoke are trapped, and the pH value of the smoke and the content of volatile acid in the particulate matters are measured; adopting a mathematical statistical method to analyze and determine a relation model of the pH value of the cigarette sample and each volatile acid; b) The porous material is utilized to adsorb volatile acid, and the release amount and the release rate of the volatile acid adsorbed by the porous material under the condition of specific gas flow rate are analyzed; c) Determining the regulating direction and amplitude of the pH value of the cigarette sample, and determining the types and contents of the porous material for regulating the pH value and the adsorbed volatile acid on the basis of not changing the sensory style characteristics of the cigarette product according to the relation model of the pH value of the cigarette sample and each volatile acid determined in the step a) and the release characteristics of the porous material adsorbed volatile acid obtained in the step b); d) Preparing the volatile acid sample adsorbed by the porous material determined in the step c), applying the volatile acid sample to the filter tip, and realizing the regulation and control of the pH value of the smoke by utilizing the transfer of the volatile acid to the smoke during suction. Compared with the prior art, the method realizes quantitative transfer of volatile acid components into the smoke by utilizing the controlled release effect of the porous material on the volatile components on the basis of defining the relation model of the smoke pH and volatile acid in the particulate matters, thereby achieving the purpose of regulating the smoke pH value and realizing the directional and accurate regulation of the smoke pH; the method avoids the risk of changing the formula of the flavoring by adding components such as acids and the like into the tobacco shreds, and realizes the purpose of regulating and controlling the pH of the smoke by controlling the direct transfer of the adsorbed volatile acid to the smoke by using the porous material; the method for regulating and controlling the pH of the flue gas provided by the invention has various application modes, obvious effect and strong regulating and controlling capability, and can effectively reduce the irritation of the flue gas and improve the sucking quality of the flue gas.
In order to further illustrate the present invention, the following examples are provided.
Example 1
The embodiment provides a method for regulating and controlling the pH of cigarette smoke of an X brand by utilizing volatile acid adsorbed by a porous material, which comprises the following specific steps:
(1) Preparing 40X brand cigarette samples with the pH of the smoke to be regulated, balancing the cigarettes for 48 hours at the temperature of 22 ℃ and the relative humidity of 60%, sucking the cigarettes by using a rotary disc type smoking machine, capturing the particulate matters of the smoke by using a Cambridge filter disc, performing pretreatment extraction by vibration, and measuring the pH value of the smoke and the content of volatile organic acids in the particulate matters by using a precise pH meter, wherein the volatile organic acids comprise propionic acid, benzoic acid, valeric acid, isovaleric acid and alpha-methyl butyric acid.
(2) By grey correlationThe correlation degree between the pH value of the flue gas and the benzoic acid, the valeric acid and the isovaleric acid is determined to be large by analysis, and a relation model between the pH value and the benzoic acid, the valeric acid and the isovaleric acid, which is established based on multiple regression analysis, is M1; the model expression is: y= 5.980-1.875×10 -4 x 1 -1.025*10 -4 x 2 -1.583*10 -4 x 3 Wherein Y is the pH value of the flue gas, and x 1 、x 2 And x 3 The contents of benzoic acid, valeric acid and isovaleric acid in the flue gas are expressed in micrograms per unit.
(3) And (2) respectively loading volatile acids by using biomass activated carbon as a porous material and adopting a static adsorption method, wherein the adsorption temperature is 30 ℃, the types of the volatile acids are benzoic acid, valeric acid and isovaleric acid which are screened in the step (2) and have high correlation degree, the activated carbon adsorbing the acids is purged in a constant-flow air flow pipe with the air flow rate of 17.5mL/s, the purging temperature is 35 ℃, and the release amounts and release rates of the three types of volatile acids are calculated.
(4) The pH value of the particulate matters of the X brand cigarette is 5.980, the pH value needs to be reduced by about 0.150 appropriately so as to reduce the irritation and promote the alcohol feeling, when the biomass activated carbon is determined to be a porous adsorption material according to a relation model M1, the volatile acid is preferably selected from benzoic acid and isovaleric acid, the adsorption amounts are respectively 250mg/g and 320mg/g, and the biomass activated carbon dosage is preferably 10 mg.
(5) The biomass activated carbon is used for loading single benzoic acid or isovaleric acid by adopting a static adsorption method respectively, the activated carbon is added into 10mg of the middle part of the filter tip, cigarettes are smoked and the pH value of smoke is measured, and when the single benzoic acid and isovaleric acid are adopted, the pH value reduction amounts are respectively 0.145 and 0.151, so that the directional accurate regulation and control of the pH value can be basically realized.
Example 2
The embodiment provides a method for regulating and controlling the pH of cigarette smoke of an X brand by utilizing volatile acid adsorbed by a MOF porous material, which comprises the following specific steps:
(1) Preparing 40X brand cigarette samples with the pH of the smoke to be regulated, balancing the cigarettes for 48 hours at the temperature of 22 ℃ and the relative humidity of 60%, sucking the cigarettes by using a rotary disc type smoking machine, capturing the particulate matters of the smoke by using a Cambridge filter disc, performing pretreatment extraction by vibration, and measuring the pH value of the smoke and the content of volatile organic acids in the particulate matters by using a precise pH meter, wherein the volatile organic acids comprise propionic acid, benzoic acid, valeric acid, isovaleric acid and alpha-methyl butyric acid.
(2) The correlation degree between the pH value of the flue gas and the benzoic acid, the valeric acid and the isovaleric acid is determined to be large through grey correlation analysis, and a relation model between the pH value and the benzoic acid, the valeric acid and the isovaleric acid, which is established based on multiple regression analysis, is M1; the model expression is: y= 5.980-1.875×10 -4 x 1 -1.025*10 -4 x 2 -1.583*10 -4 x 3 Wherein Y is the pH value of the flue gas, and x 1 、x 2 And x 3 The contents of benzoic acid, valeric acid and isovaleric acid in the flue gas are expressed in micrograms per unit.
(3) And (2) taking the MOF porous material as an adsorption material, respectively loading volatile acids by adopting a static adsorption method, wherein the adsorption temperature is 30 ℃, the types of the volatile acids are benzoic acid, valeric acid and isovaleric acid which are screened in the step (2) and have high correlation degree, sweeping the MOF of the adsorbed acids in a constant-flow air flow pipe with the air flow rate of 17.5mL/s, and the sweeping temperature is 35 ℃, so as to calculate the release amounts and release rates of the three types of volatile acids.
(4) The pH value of the particulate matters of the cigarette of the brand X is 5.980, the pH value is required to be reduced by about 0.150 to reduce the irritation and promote the alcohol sensation, and when the MOF is determined to be a porous adsorption material according to a relation model M1, the regulation and control range of the volatile acid selection benzoic acid and isovaleric acid is large, the effect is obvious, the adsorption amounts of the two volatile acids in the MOF are respectively 150mg/g and 220mg/g, and the total consumption of the MOF is preferably 15 mg.
(5) And (3) loading single benzoic acid or isovaleric acid by using MOFs respectively through a static adsorption method, mixing MOFs adsorbed with the benzoic acid and the isovaleric acid, and adding the mixture into the middle part of the filter tip, wherein the MOFs adsorbed with the benzoic acid are 10mg, the MOFs adsorbed with the isovaleric acid are 5mg, smoking cigarettes, measuring the pH value of the smoke, and the reduction of the pH value is 0.155, so that the directional accurate regulation and control of the pH value can be basically realized.
Example 3
The embodiment provides a method for regulating and controlling the pH of cigarette smoke of a brand V by utilizing volatile acid adsorbed by a porous molecular sieve material, which comprises the following specific steps:
(1) Preparing 40V brand cigarette samples with the pH of the smoke to be regulated, carrying out cigarette balancing for 48 hours at the temperature of 22 ℃ and the relative humidity of 60%, sucking the cigarettes by using a rotary disc type smoking machine, capturing the particulate matters of the smoke by using a Cambridge filter disc, carrying out pretreatment extraction by vibration, and measuring the content of volatile organic acids in the particulate matters by using a precise pH meter to measure the pH value of the smoke and a gas chromatography-mass spectrometry method, wherein the volatile organic acids comprise formic acid, acetic acid, propionic acid, benzoic acid, valeric acid, capric acid and butyric acid.
(2) The correlation degree between the pH value of the cigarette smoke of the brand V and formic acid, acetic acid, propionic acid and isovaleric acid in the smoke is determined to be large through grey correlation analysis, and a relation model of the pH value and the formic acid, the acetic acid, the propionic acid and the isovaleric acid, which is established based on multiple regression analysis, is M2, and the model expression is as follows: y= 6.259-4.875×10 -4 x 1 -3.025*10 -4 x 2 -2.657*10 -4 x 3 -1.373*10 -4 x 4 Wherein Y is the pH value of the flue gas, and x 1 、x 2 、x 3 And x 4 The contents of formic acid, acetic acid, propionic acid and isovaleric acid in the flue gas are expressed in micrograms per unit.
(3) And (3) taking the mesoporous molecular sieve SBA-15 as a porous material, respectively loading volatile acids by adopting a static adsorption method, wherein the adsorption temperature is 30 ℃, the types of the volatile acids are formic acid, acetic acid, propionic acid and isovaleric acid which are screened in the step (2) and have high correlation degree, and purging the mesoporous molecular sieve SBA-15 for adsorbing the acids in a constant-flow gas flow pipe with the gas flow rate of 17.5mL/s, wherein the purging temperature is 35 ℃, and the release amounts and release rates of the four volatile acids are calculated.
(4) The pH value of the particulate matters of the cigarette of the brand V is 6.259, which is measured in the step (1), is required to be reduced by about 0.350 appropriately, so as to reduce the irritation and promote the alcohol sensation, and when the mesoporous molecular sieve SBA-15 is used as a porous adsorption material according to the relation model M2, the regulating and controlling range of the volatile acid, namely formic acid, acetic acid and propionic acid, is large, the adsorption amounts of the three volatile acids in the mesoporous molecular sieve SBA-15 are respectively 80mg/g, 64mg/g and 48mg/g, and the dosage of the mesoporous molecular sieve SBA-15 is preferably 20 mg.
(5) The mesoporous molecular sieves SBA-15 are respectively loaded with single formic acid, acetic acid or propionic acid by adopting a static adsorption method, 5mg of each mesoporous molecular sieve SBA-15 which is adsorbed with the formic acid, the acetic acid and the propionic acid is respectively added into the middle part of the filter tip, 15mg in total, the cigarettes are smoked, the pH value of the smoke is measured, the reduction of the pH value is 0.325, and the directional accurate regulation and control of the pH value can be basically realized.
Example 4
The embodiment provides a method for regulating and controlling the pH of cigarette smoke of a Y brand by utilizing volatile acid adsorbed by a porous material, which comprises the following specific steps:
(1) Preparing 20Y-brand cigarette samples with the pH of the smoke to be regulated, balancing the cigarettes for 48 hours at the temperature of 22 ℃ and the relative humidity of 60%, sucking the cigarettes by using a rotary disc type smoking machine, capturing the particulate matters of the smoke by using a Cambridge filter disc, extracting by using a vibration pretreatment, and measuring the pH value of the smoke and the volatile organic acid content in the particulate matters by using a precise pH meter and a gas chromatography-mass spectrometry method, wherein the volatile organic acid content comprises glycolic acid, methyl valeric acid and lactic acid.
(2) The correlation degree between the pH value of the flue gas and the glycolic acid, the methyl valeric acid and the lactic acid is determined to be large through grey correlation analysis, and a relation model between the pH value and the glycolic acid, the methyl valeric acid and the lactic acid, which is established based on multiple regression analysis, is M3; the model expression is: y= 6.050-3.862 x 10 -3 w 1 -3.037*10 -3 w 2 -2.273*10 -3 w 3 Wherein Y is the measured value of the pH of the flue gas, w 1 、w 2 And w 3 The contents of glycolic acid, methyl valeric acid and lactic acid in the flue gas are respectively expressed in micrograms per unit.
(3) With commercially available coconut shell activated carbon particles (internal surface area 750m 2 And/g, wherein the average pore diameter is 32 nm) is a porous material, a static adsorption method is adopted to load volatile acids respectively, the adsorption temperature is 35 ℃, the types of the volatile acids are glycolic acid, methyl valeric acid and lactic acid which are screened in the step (2) and have high correlation degree, commercial coconut shell activated carbon particles for adsorbing the acids are purged in a constant-flow air flow pipe with the air flow rate of 17.5mL/s, the purging temperature is 35 ℃, and the release amounts and release rates of the three types of volatile acids are calculated.
(4) The pH value of the granular phase matters of the cigarette of the brand Y is 6.050, the pH value needs to be reduced by about 0.125 to reduce the irritation and improve the alcohol feeling, and when the commercial coconut shell activated carbon particles are determined to be porous adsorption materials according to a relation model M3, the volatile acid is preferably selected from glycolic acid and lactic acid, the adsorption amounts of the glycolic acid and lactic acid are respectively 35mg/g and 65mg/g, and the use amount of the commercial coconut shell activated carbon particles is preferably 15 mg.
(5) The commercial coconut shell activated carbon particles are respectively loaded with single glycolic acid and lactic acid by adopting a static adsorption method, 15mg of the commercial coconut shell activated carbon particles are added into the middle part of the filter tip, the cigarette is smoked, the pH value of the smoke is measured, and when the single glycolic acid and lactic acid are adopted, the pH value reduction amounts are respectively 0.125 and 0.119, so that the directional accurate regulation and control of the pH value can be basically realized.
Example 5
The embodiment provides a method for regulating and controlling the pH of cigarette smoke of a Z brand by utilizing volatile acid adsorbed by macroporous resin porous materials with the particle size of 1.5mm and a main structure of polystyrene copolymer, which comprises the following specific steps:
(1) Preparing 40Z brand cigarette samples with the pH of the smoke to be regulated, balancing the cigarettes for 48 hours at the temperature of 22 ℃ and the relative humidity of 60%, sucking the cigarettes by using a rotary disc type smoking machine, capturing the particulate matters of the smoke by using a Cambridge filter disc, performing pretreatment extraction by vibration, and measuring the pH value of the smoke and the content of volatile organic acids in the particulate matters by using a precise pH meter, wherein the volatile organic acids comprise furan acid, benzoic acid, alpha-methylbutanoic acid and phenylacetic acid.
(2) The correlation degree between the pH value of the flue gas and the furanic acid, the benzoic acid and the alpha-methyl butyric acid is determined to be large through grey correlation analysis, and a relation model between the pH value and the furanic acid, the benzoic acid and the alpha-methyl butyric acid, which is established based on multiple regression analysis, is M4; the model expression is: y= 6.180-2.875×10 -4 x 1 -1.635*10 -4 x 2 -1.213*10 -4 x 3 Wherein Y is the pH value of the flue gas, and x 1 、x 2 And x 3 The contents of benzoic acid, alpha-methyl butyric acid and furanic acid in the flue gas are expressed in micrograms per unit.
(3) And (2) respectively loading volatile acids by using a static adsorption method by taking the macroporous resin as a porous material, wherein the adsorption temperature is 30 ℃, the types of the volatile acids are benzoic acid, alpha-methyl butyric acid and furanic acid which are screened in the step (2) and have high correlation degree, the macroporous resin for adsorbing the acids is purged in a constant-flow air flow pipe with the air flow rate of 17.5mL/s, the purging temperature is 35 ℃, and the release amounts and release rates of the three types of volatile acids are calculated.
(4) The pH value of the particulate matters of the Z brand cigarette is 6.180, the pH value is required to be reduced by about 0.190 appropriately, so that the irritation is reduced, the alcohol feeling is improved, when the macroporous resin is determined to be a porous adsorption material according to a relation model M4, the regulation and control range of the volatile acid selected from benzoic acid and alpha-methylbutyric acid is large, the effect is obvious, the adsorption amounts of the two volatile acids in the macroporous resin are respectively 170mg/g and 120mg/g, and the dosage of the macroporous resin is preferably 50 mg.
(5) The macroporous resin is used for loading single benzoic acid and alpha-methyl butyric acid by adopting a static adsorption method respectively, 50mg of the macroporous resin is added into the middle part of the filter tip, cigarettes are smoked and the pH value of smoke is measured, and when the single benzoic acid and the single alpha-methyl butyric acid are adopted, the pH value reduction amounts are 0.185 and 0.175 respectively, so that the directional accurate regulation and control of the pH value can be basically realized.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A method for regulating and controlling the pH of flue gas by utilizing volatile acid adsorbed by porous materials comprises the following steps:
a) The cigarette sample requiring to regulate and control the pH of the smoke is smoked by a smoking machine, the particulate matters of the smoke are trapped, and the pH value of the smoke and the content of volatile acid in the particulate matters are measured; adopting a mathematical statistical method to analyze and determine a relation model of the pH value of the cigarette sample and each volatile acid; the measured volatile acid comprises more than three of formic acid, acetic acid, propionic acid, furan acid, benzoic acid, phenylacetic acid, valeric acid, isovaleric acid, alpha-methyl butyric acid, beta-methyl valeric acid, glycolic acid, methyl valeric acid and lactic acid;
b) The porous material is utilized to adsorb volatile acid, and the release amount and the release rate of the volatile acid adsorbed by the porous material under the condition of specific gas flow rate are analyzed; the porous material is porous carbon material, activated carbon particles, mesoporous molecular sieve, metal organic frame material, macroporous resin or plant tissue particles; the specific gas flow rate condition is 17.5mL/s;
c) Determining the regulating direction and amplitude of the pH value of the cigarette sample, and determining the types and contents of the porous material for regulating the pH value and the adsorbed volatile acid on the basis of not changing the sensory style characteristics of the cigarette product according to the relation model of the pH value of the cigarette sample and each volatile acid determined in the step a) and the release characteristics of the porous material adsorbed volatile acid obtained in the step b);
d) Preparing the volatile acid sample adsorbed by the porous material determined in the step c), applying the volatile acid sample to the filter tip, and realizing the regulation and control of the pH value of the smoke by utilizing the transfer of the volatile acid to the smoke during suction.
2. The method for controlling the pH of smoke by using volatile acid adsorbed by porous materials according to claim 1, wherein in the step a), 20-60 cigarette samples are smoked by a rotary disc type smoking machine or a linear type smoking machine by using a smoking machine.
3. The method for regulating and controlling the pH of flue gas by utilizing volatile acid adsorbed by porous materials according to claim 1, wherein the trapped flue gas particulate matters in the step a) are extracted by adopting an extraction liquid to extract Cambridge filter components.
4. The method for regulating and controlling the pH of the flue gas by utilizing volatile acid adsorbed by the porous material according to claim 1, wherein the instrument for measuring the pH value of the flue gas in the step a) is a precise pH meter, and the method for measuring the content of the volatile acid in the particulate matters is a gas chromatography-mass spectrometry.
5. The method for regulating the pH of flue gas by using volatile acid adsorbed by porous material according to claim 1, wherein the mathematical statistics in step a) comprise one or more of correlation analysis, gray correlation analysis, genetic algorithm analysis and neural network analysis.
6. The method for controlling the pH of flue gas by using volatile acid adsorbed by porous material according to claim 1, wherein the method for preparing the volatile acid sample adsorbed by porous material determined in step c) in step d) is a static adsorption method.
7. The method for controlling pH of flue gas by means of volatile acid adsorbed by porous material according to claim 1, wherein said applying in step d) is by means of a segmented composite.
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